Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c7df8f837cb4f43b8327b0f2942de9e6464f1a9be76347918c21a0214d90264' 
  AND token = 'PHM6MacmqHEaKRI8u+r9+Wipb/hs5aK1Es5tGuiZt8M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}